Extension tray



FIG. 1 is an upper, front perspective view of an extension tray showing my new design;

FIG. 2 is a lower, rear perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a left side elevational view thereof, and,

FIG. 8 is a bottom plan view thereof. 

The ornamental design for an extension tray, as shown and described. 